T6791

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T6791

Sigma

 

Trizma® base

SigmaUltra, pH 10.5-12.0 (20 °C, 1 M in H2O), ≥99.9% (titration)

Synonym:2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Tris(hydroxymethyl)aminomethane, Trometamol
CAS Number:77-86-1
Linear Formula:NH2C(CH2OH)3
Molecular Weight:121.14
Beilstein Registry Number:741883
EC Number:201-064-4
MDL number:MFCD00004679
PubChem Substance ID:24900405

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Description

Other NotesEasily compare specifications for Trizma products with the Trizma specification table.
 The pH values of all buffers are temperature- and concentration-dependent. For Tris buffers, pH increases about 0.03 unit per °C decrease in temperature, and decreases 0.03-0.05 unit per ten-fold dilution.
For precise applications, use a carefully calibrated pH meter with a glass/calomel combination electrode.
Legal InformationTrizma is a registered trademark of Sigma-Aldrich Biotechnology LP and Sigma-Aldrich Co.

Properties

gradeSigmaUltra
assay≥99.9% (titration)
total impurities≤0.005% Insoluble matter
ign. residue (900°C) ≤0.01% (as SO4)
loss≤0.5% loss on drying, 110°C
pH10.5-12.0 (20 °C, 1 M in H2O)
useful pH range7 - 9
pKa (25 °C)8.1
EQP levelElite
bp219-220 °C/10 mmHg(lit.)
mp167-172 °C(lit.)
solubilityH2O: 1 M at 20 °C, clear, colorless
anion traceschloride (Cl-): ≤0.005%
 sulfate (SO42-): ≤0.005%
cation tracesAl: ≤0.0005%
 As: ≤0.0001%
 Ba: ≤0.0005%
 Bi: ≤0.0005%
 Ca: ≤0.001%
 Cd: ≤0.0005%
 Co: ≤0.0005%
 Cr: ≤0.0005%
 Cu: ≤0.0005%
 Fe: ≤0.0005%
 K: ≤0.005%
 Li: ≤0.0005%
 Mg: ≤0.0005%
 Mn: ≤0.0005%
 Mo: ≤0.0005%
 Na: ≤0.005%
 Ni: ≤0.0005%
 Pb: ≤0.0005%
 Sr: ≤0.0005%
 Zn: ≤0.0005%
abs.A1M/260, H2O ≤0.025
 A1M/280, H2O ≤0.020

Safety

Personal Protective Equipmentdust mask type N95 (US), Eyeshields, Gloves
Hazard CodesXi
Risk Statements36
Safety Statements26
WGK Germany2
RTECSTY2900000

References

referenceMolloy, M.P., et al. Electrophoresis 19, 837, (1998)
 Santoni, V., et al. Electrophoresis 21, 1054, (2000)
MerckMerck 13,9842
BeilsteinBeil. 4,IV,1903
 Aldrich MSDS 1, 1815:C / Corp MSDS 1 (2), 3532:A / FT-IR 1 (1), 347:C / FT-IR 2 (1), 542:D / IR-Spectra (3), 203:G / IR-Spectra (2), 183:E / IR-Spectra (2), 183:D / IR-Spectra (3), 203:H / NMR-Reference 2 (1), 304:A / RegBook 1 (1), 371:C / Sax 6, 2558 / Sigma FT-IR 1 (2), 60:D / Sigma FT-IR 1 (2), 61:C / Structure Index 1, 52:C:5 / Vapor Phase 3, 437:C